Fatores químicos e físicos que afetam a contaminação por chumbo e cobre em água potável: uma abordagem para o estudo de caso em química analítica

Grigoletto, Tahuana Luiza Bim; Fuzari, Bruno; Andrade, Adalgisa R. de; Campos, M. L. A. M.; Gerlach, Raquel Fernanda; Santos, José Eduardo Tanus dos

doi:10.1590/s0100-40422012001000020

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Analisando os dados gerados e relacionando-os com os teores máximos estabelecidos pela Resolução CONAMA pode-se inferir que o Chumbo e o Cádmio se encontram dentro do limite permitido. Este resultado caracteriza uma grande vantagem, uma vez que elevadas concentrações destes metais são bastante tóxicas ao organismo humano, além de causar câncer, danos neurológicos e provocar aborto em gestantes 14,15 . Ao contrário do Cádmio, observa-se que o valor apresentado para o Cobre se encontra consideravelmente elevado quando comparado com os valores normais estabelecidos pelo CONAMA.…”

Section: Discussionunclassified

Avaliação de metais pesados e poluentes ambientais no Rio do Sal (Nossa Senhora do Socorro - SE) e seu impacto na saúde humana

Alves¹,

Alves²,

Oliveira³

et al. 2021

SaudColetiv (Barueri)

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O objetivo deste artigo foi analisar metais pesados e poluentes no Rio do Sal e o seu impacto na saúde humana, considerando que moradores de suas margens o utiliza como fonte de alimento, água e lazer. Atualmente um dos problemas ambientais mais comuns é a poluição química decorrente dos despejos residenciais e industriais. Tendo em vista ao tempo que os metais pesados persistem em corpos hídricos, torna-se fundamental uma pesquisa acerca de seus níveis no meio ambiente. O método aplicado foi uma coleta de dados realizada em junho de 2011 as margens do Rio do Sal localizado em Nossa Senhora do Socorro/SE. A análise empregada foi através de Espectroscopia de Absorção Atômica. O resultado demonstrou a presença de metais pesados que ultrapassam o limite máximo permito pelo CONAMA. A conclusão revelou, portanto, que o Rio do Sal é considerado impróprio para consumo humano devido a quantidades elevadas de cobre.

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Section: Discussionunclassified

Avaliação de metais pesados e poluentes ambientais no Rio do Sal (Nossa Senhora do Socorro - SE) e seu impacto na saúde humana

Alves¹,

Alves²,

Oliveira³

et al. 2021

SaudColetiv (Barueri)

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“…In addition to the problem of high dispersion in the environment, the narrow limit between concentrations considered acceptable and those that are toxic to living beings in general is also a concern (Grigoletto et al, 2012;Santana et al, 2017;Zhou et al, 2018;Luo et al, 2020). In concentrations considered critical for plants, copper promotes leaf chlorosis and causes cytotoxicity and promotes oxidative stress by generating reactive oxygen species (ROS) that are harmful to plants (Kumar et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

et al. 2021

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Aquatic plants are often exposed to metal contamination. The study evaluated the bioaccumulation of copper (Cu) ions in aqueous solution by the biomass of leaves and roots of the macrophyte Salvinia natans. Plants of S. natans were submitted to culture solutions with different concentrations of Cu ions, evaluated at intervals of seven days. The leaf and root samples were separately subjected to atomic absorption spectroscopy with flame atomization to assess the concentration of copper accumulated in its biomass. The results demonstrated a pattern of accumulation dependent on the concentration of the metal in the culture medium and the time of exposure of the plants to the contamination. The accumulation was greater in the biomass of the roots when compared to the leaves. Throughout the experiment, toxicity symptoms were observed in the morphology of plants subjected to all copper concentrations, demonstrating the macrophyte's viability for bioindicating the toxicity of this metal in aquatic environments. A high accumulation of copper ions was obtained both in the biomass of the roots and leaves of the plants, confirming their potential bioaccumulator of Cu. The analysis of biomass suggests an important characteristic of metal compartmentalization by the plant, associating the absorption by the roots and the possible transfer to the leaves. In general, our results show that S. natans is an organism with a potential bioindicator and bioaccumulator of Cu and consists of a viable cost-effective option for phytoremediation of aquatic environments contaminated by metals

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Physicochemical and microbiological quality of the public water supply in 38 cities from the midwest region of the State of São Paulo, Brazil

Palmeira

Silva

Júnior

et al. 2019

Water Environment Research

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The public water supply is a constant subject of concern since its quality depends on many different factors. The intention of this paper was to evaluate the quality of the public water supply in 38 cities from the midwest region of the State of São Paulo, Brazil, during the year of 2016. The parameters investigated included free residual chlorine, pH, apparent color, turbidity, fluoride, nitrate, and the presence of total coliforms and Escherichia coli. In total, from the 2,897 samples of water under analysis, 545 (18.81%) samples conflicted with the country's current legislation. The highest rates of noncompliance were related to fluoride contents and the presence of total coliforms. In addition, high nitrate concentrations (>10 mg/L NO3‐N) were observed in one of the cities’ water sample. Our data display the major critical points of the water offered to the population and expose the potential risks for human health, indicating the need of a regular surveillance of the water and the adoption of corrective and preventive measures, in order to avoid the waterborne diseases occurrence, thus contributing to the population's health improvement. Practitioner points Approximately 20% of the unsatisfactory water samples. High nitrate concentrations in public supply water. Potential risks for human health.

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Fatores químicos e físicos que afetam a contaminação por chumbo e cobre em água potável: uma abordagem para o estudo de caso em química analítica

Cited by 4 publications

References 8 publications

Avaliação de metais pesados e poluentes ambientais no Rio do Sal (Nossa Senhora do Socorro - SE) e seu impacto na saúde humana

Avaliação de metais pesados e poluentes ambientais no Rio do Sal (Nossa Senhora do Socorro - SE) e seu impacto na saúde humana

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

Physicochemical and microbiological quality of the public water supply in 38 cities from the midwest region of the State of São Paulo, Brazil

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